Set max value for pre_capture (#8656)

frigate/record/maintainer.py

@@ -23,6 +23,7 @@ from frigate.const import (
     CACHE_SEGMENT_FORMAT,
     INSERT_MANY_RECORDINGS,
     MAX_SEGMENT_DURATION,
+    MAX_SEGMENTS_IN_CACHE,
     RECORD_DIR,
 )
 from frigate.models import Event, Recordings
@@ -121,8 +122,8 @@ class RecordingMaintainer(threading.Thread):
                 }
             )
 
-        # delete all cached files past the most recent 5
-        keep_count = 5
+        # delete all cached files past the most recent MAX_SEGMENTS_IN_CACHE
+        keep_count = MAX_SEGMENTS_IN_CACHE
         for camera in grouped_recordings.keys():
             # sort based on start time
             grouped_recordings[camera] = sorted(